Hello. Saw it on sale in Winter Sale, and looked like something I'd like, and tried it out. It was only $3.60, so I'll keep it, but not sure it will keep me interested longterm. Some comments: 1. Oxygen depletes too fast, unless you find a respirator. Also very hard to find oxygen cannisters that refills a reasonable amount of oxygen. Highest was 9.5% and lowest is 6.0%. 2. Health depletes too fast, there is no armor, medkits are few and far between, and enemies are aimbots, always knowing where you a...

I'm confused by the "-1" in the title, does this mean it's just the first part of multiple? Important to know for purchasing decisions.